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package convert // import "github.com/docker/docker/daemon/cluster/convert"
import (
"fmt"
"strings"
types "github.com/docker/docker/api/types/swarm"
swarmapi "github.com/docker/swarmkit/api"
"github.com/docker/swarmkit/ca"
gogotypes "github.com/gogo/protobuf/types"
)
// SwarmFromGRPC converts a grpc Cluster to a Swarm.
func SwarmFromGRPC(c swarmapi.Cluster) types.Swarm {
swarm := types.Swarm{
ClusterInfo: types.ClusterInfo{
ID: c.ID,
Spec: types.Spec{
Orchestration: types.OrchestrationConfig{
TaskHistoryRetentionLimit: &c.Spec.Orchestration.TaskHistoryRetentionLimit,
},
Raft: types.RaftConfig{
SnapshotInterval: c.Spec.Raft.SnapshotInterval,
KeepOldSnapshots: &c.Spec.Raft.KeepOldSnapshots,
LogEntriesForSlowFollowers: c.Spec.Raft.LogEntriesForSlowFollowers,
HeartbeatTick: int(c.Spec.Raft.HeartbeatTick),
ElectionTick: int(c.Spec.Raft.ElectionTick),
},
EncryptionConfig: types.EncryptionConfig{
AutoLockManagers: c.Spec.EncryptionConfig.AutoLockManagers,
},
CAConfig: types.CAConfig{
// do not include the signing CA cert or key (it should already be redacted via the swarm APIs) -
// the key because it's secret, and the cert because otherwise doing a get + update on the spec
// can cause issues because the key would be missing and the cert wouldn't
ForceRotate: c.Spec.CAConfig.ForceRotate,
},
},
TLSInfo: types.TLSInfo{
TrustRoot: string(c.RootCA.CACert),
},
RootRotationInProgress: c.RootCA.RootRotation != nil,
DefaultAddrPool: c.DefaultAddressPool,
SubnetSize: c.SubnetSize,
DataPathPort: c.VXLANUDPPort,
},
JoinTokens: types.JoinTokens{
Worker: c.RootCA.JoinTokens.Worker,
Manager: c.RootCA.JoinTokens.Manager,
},
}
issuerInfo, err := ca.IssuerFromAPIRootCA(&c.RootCA)
if err == nil && issuerInfo != nil {
swarm.TLSInfo.CertIssuerSubject = issuerInfo.Subject
swarm.TLSInfo.CertIssuerPublicKey = issuerInfo.PublicKey
}
heartbeatPeriod, _ := gogotypes.DurationFromProto(c.Spec.Dispatcher.HeartbeatPeriod)
swarm.Spec.Dispatcher.HeartbeatPeriod = heartbeatPeriod
swarm.Spec.CAConfig.NodeCertExpiry, _ = gogotypes.DurationFromProto(c.Spec.CAConfig.NodeCertExpiry)
for _, ca := range c.Spec.CAConfig.ExternalCAs {
swarm.Spec.CAConfig.ExternalCAs = append(swarm.Spec.CAConfig.ExternalCAs, &types.ExternalCA{
Protocol: types.ExternalCAProtocol(strings.ToLower(ca.Protocol.String())),
URL: ca.URL,
Options: ca.Options,
CACert: string(ca.CACert),
})
}
// Meta
swarm.Version.Index = c.Meta.Version.Index
swarm.CreatedAt, _ = gogotypes.TimestampFromProto(c.Meta.CreatedAt)
swarm.UpdatedAt, _ = gogotypes.TimestampFromProto(c.Meta.UpdatedAt)
// Annotations
swarm.Spec.Annotations = annotationsFromGRPC(c.Spec.Annotations)
return swarm
}
// SwarmSpecToGRPC converts a Spec to a grpc ClusterSpec.
func SwarmSpecToGRPC(s types.Spec) (swarmapi.ClusterSpec, error) {
return MergeSwarmSpecToGRPC(s, swarmapi.ClusterSpec{})
}
// MergeSwarmSpecToGRPC merges a Spec with an initial grpc ClusterSpec
func MergeSwarmSpecToGRPC(s types.Spec, spec swarmapi.ClusterSpec) (swarmapi.ClusterSpec, error) {
// We take the initSpec (either created from scratch, or returned by swarmkit),
// and will only change the value if the one taken from types.Spec is not nil or 0.
// In other words, if the value taken from types.Spec is nil or 0, we will maintain the status quo.
if s.Annotations.Name != "" {
spec.Annotations.Name = s.Annotations.Name
}
if len(s.Annotations.Labels) != 0 {
spec.Annotations.Labels = s.Annotations.Labels
}
if s.Orchestration.TaskHistoryRetentionLimit != nil {
spec.Orchestration.TaskHistoryRetentionLimit = *s.Orchestration.TaskHistoryRetentionLimit
}
if s.Raft.SnapshotInterval != 0 {
spec.Raft.SnapshotInterval = s.Raft.SnapshotInterval
}
if s.Raft.KeepOldSnapshots != nil {
spec.Raft.KeepOldSnapshots = *s.Raft.KeepOldSnapshots
}
if s.Raft.LogEntriesForSlowFollowers != 0 {
spec.Raft.LogEntriesForSlowFollowers = s.Raft.LogEntriesForSlowFollowers
}
if s.Raft.HeartbeatTick != 0 {
spec.Raft.HeartbeatTick = uint32(s.Raft.HeartbeatTick)
}
if s.Raft.ElectionTick != 0 {
spec.Raft.ElectionTick = uint32(s.Raft.ElectionTick)
}
if s.Dispatcher.HeartbeatPeriod != 0 {
spec.Dispatcher.HeartbeatPeriod = gogotypes.DurationProto(s.Dispatcher.HeartbeatPeriod)
}
if s.CAConfig.NodeCertExpiry != 0 {
spec.CAConfig.NodeCertExpiry = gogotypes.DurationProto(s.CAConfig.NodeCertExpiry)
}
if s.CAConfig.SigningCACert != "" {
spec.CAConfig.SigningCACert = []byte(s.CAConfig.SigningCACert)
}
if s.CAConfig.SigningCAKey != "" {
// do propagate the signing CA key here because we want to provide it TO the swarm APIs
spec.CAConfig.SigningCAKey = []byte(s.CAConfig.SigningCAKey)
}
spec.CAConfig.ForceRotate = s.CAConfig.ForceRotate
for _, ca := range s.CAConfig.ExternalCAs {
protocol, ok := swarmapi.ExternalCA_CAProtocol_value[strings.ToUpper(string(ca.Protocol))]
if !ok {
return swarmapi.ClusterSpec{}, fmt.Errorf("invalid protocol: %q", ca.Protocol)
}
spec.CAConfig.ExternalCAs = append(spec.CAConfig.ExternalCAs, &swarmapi.ExternalCA{
Protocol: swarmapi.ExternalCA_CAProtocol(protocol),
URL: ca.URL,
Options: ca.Options,
CACert: []byte(ca.CACert),
})
}
spec.EncryptionConfig.AutoLockManagers = s.EncryptionConfig.AutoLockManagers
return spec, nil
}
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